/* 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package cc.alcina.framework.gwt.client.objecttree;

import java.util.ArrayList;
import java.util.List;

/**
 * 
 * @author Nick Reddel
 */
public interface IsRenderableFilter {
	public boolean isRenderable(TreeRenderable renderable, TreeRenderer renderer);

	public static class CompositeIsRenderableFilter implements
			IsRenderableFilter {
		private List<IsRenderableFilter> filters = new ArrayList<IsRenderableFilter>();

		public CompositeIsRenderableFilter add(IsRenderableFilter filter) {
			filters.add(filter);
			return this;
		}

		@Override
		public boolean isRenderable(TreeRenderable renderable,
				TreeRenderer renderer) {
			for (IsRenderableFilter filter : filters) {
				if (!filter.isRenderable(renderable, renderer)) {
					return false;
				}
			}
			return true;
		}
	}
}
